Re: epoll with ONESHOT possibly fails to deliver events

From: Andreas Voellmy
Date: Mon Dec 17 2012 - 21:35:04 EST

On Dec 17, 2012, at 9:07 PM, Eric Wong <normalperson@xxxxxxxx> wrote:

> Andreas Voellmy <andreas.voellmy@xxxxxxxx> wrote:
>> There were a couple of errors in the code when I posted my last
>> message. I have fixed those. The epoll bug still occurs.
> Sorry I haven't gotten around to this.
> Can you reproduce this with fewer cores? (I only have 4 at most).

I've been able to reproduce it on as few as 8 cores. I've never seen it occur with fewer than that.

> Have you tried the latest stable kernel version?

No, I've only tried

> Can you reproduce this over TCP loopback, or only across two machines?
> If the latter, it could also be a driver or firmware bug...

Yes, it also occurs when I run the http request generator on the same machine on the loopback interface.

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